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Fuel Tech Experts » Reviews UK » Oilsyn ReleaseTech Power Flush Review
Oilsyn ReleaseTech Power Flush. Engine cleaner, Deglaze and Compression Restorer.

Oilsyn ReleaseTech Power Flush Review

by FTE Published on Friday, April 4th, 2025

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Expert Product Review & Performance Analysis
UK Manufactured
Oilsyn ReleaseTech Power Flush Diesel & Petrol Engine Cleaner 250ml

Product Overview

Oilsyn ReleaseTech Power Flush represents a revolutionary breakthrough in engine cleaning technology, introducing the first ester-based engine flush available on the market. This 250ml professional-grade cleaner combines next-generation multi-cleaning technology with Group VI Ester and Friction Modifier to deliver safe and rapid compression restoration. With its proprietary 30+ TBN cleaning power and bore glazing removal capabilities, ReleaseTech safely removes sludge, particulates, gum and varnish from the crankcase and engine components while helping restore engine compression. Developed and manufactured in the UK by Oilsyn, this innovative product offers a non-corrosive solution that’s fully compatible with all petrol and diesel engines, including those with particulate filters, making it the perfect surface preparation for subsequent Oilsyn Velosyn or NanoC5 treatments.

4.0/5
Amazon Customer Rating
30+
TBN Cleaning Power
Ester
Based Technology
250ml
Volume
Functions and Benefits
4.8/5

ReleaseTech Power Flush delivers exceptional cleaning performance through its revolutionary ester-based formulation, providing comprehensive engine restoration capabilities that go far beyond conventional engine flushes. The product’s advanced chemistry targets multiple engine issues simultaneously while maintaining complete safety for all engine components.

Key Benefits:

  • Rapid deposit removal of particulates, sludge and varnish
  • Restores engine compression through bore glazing removal
  • Reduces oil consumption and extends renewed oil life
  • Safe and non-corrosive to all engine components including seals
  • Extends life of renewed oil through thorough cleaning
  • Perfect surface preparation for Oilsyn Velosyn or NanoC5
Notable Technologies
4.9/5

ReleaseTech represents a significant technological advancement in engine cleaning, being the first ester-based engine flush available on the market. The proprietary formulation combines Group VI Ester technology with advanced friction modifiers and cleaning agents to deliver unmatched performance and safety.

Technical Features:

  • First-of-its-kind Group VI Ester and Friction Modifier technology
  • Proprietary 30+ TBN cleaning and dispersant technology
  • Next Generation Multi-Cleaning Technology
  • Revolutionary ester-based formulation
  • Advanced bore glazing removal capabilities
Ease of Use
4.7/5

ReleaseTech Power Flush offers straightforward application with professional-grade results. The 250ml volume is designed for easy handling and precise dosing, while the non-corrosive formulation ensures safe application without risk of engine damage or seal deterioration.

Usage Highlights:

  • Simple pour-and-run application procedure
  • Safe for extended operation periods
  • Compatible with all petrol and diesel engines
  • No risk of seal damage or component corrosion
  • Professional-grade 250ml volume for optimal dosing
Popularity
4.5/5

As a newer product in the market, ReleaseTech is building its reputation based on Oilsyn’s established credibility and innovative technology. The product benefits from positive customer feedback and professional recognition, though it’s still establishing its market presence compared to more established competitors.

Market Presence:

  • 4.0/5 stars from early Amazon UK customer reviews
  • Growing recognition among automotive professionals
  • Backed by Oilsyn’s established UK reputation
  • Featured in professional automotive publications
  • Part of comprehensive Oilsyn product ecosystem
Revolutionary Ester Technology

Oilsyn ReleaseTech Power Flush represents a breakthrough in engine cleaning technology as the first ester-based engine flush available on the market. Unlike conventional petroleum-based cleaners, the Group VI Ester formulation provides superior cleaning power while maintaining complete compatibility with all engine seals and components. This innovative approach delivers professional-grade results with enhanced safety, making it suitable for both modern and classic engines without risk of damage or deterioration.

Customer Sentiment
4.6/5

Customer feedback for ReleaseTech Power Flush is highly positive, with users consistently reporting impressive cleaning results and noticeable improvements in engine performance. Professional mechanics and automotive enthusiasts appreciate the product’s innovative technology and proven effectiveness.

What Customers Like What Customers Don’t Like
Revolutionary ester-based technology Higher price point than basic flushes
Excellent cleaning performance and results Limited availability compared to mainstream brands
Safe for all engine types and seals Newer product with limited long-term data
UK manufacturing and quality standards Requires understanding of proper application
Competitor Comparison
4.7/5

ReleaseTech Power Flush stands out in the engine flush market through its unique ester-based technology, offering advantages over conventional petroleum-based cleaners. While competing against established brands, its innovative formulation and superior safety profile provide distinct competitive advantages.

Main Competitors:

  • Oilsyn Velosyn (complementary product in same ecosystem)
  • PowerEnhancer Engine Flush Products (UK specialist brand)
  • LIQUI MOLY Pro-Line Engine Flush (German engineering)
  • Archoil AR2820 Professional Engine Flush (US technology)
  • Wynns Engine Flush (mass-market solution)
Overall Performance
4.8/5

ReleaseTech Power Flush delivers exceptional overall performance through its revolutionary ester-based technology, providing superior cleaning power while maintaining complete engine safety. The product consistently exceeds expectations in both cleaning effectiveness and component protection.

Performance Highlights:

  • Outstanding deposit removal and engine cleaning
  • Proven compression restoration capabilities
  • Superior safety profile with no component damage
  • Effective bore glazing removal and oil consumption reduction
  • Professional-grade results with innovative technology
Value for Money
4.5/5

ReleaseTech Power Flush offers excellent value for money considering its revolutionary ester-based technology and professional-grade performance. While priced at a premium compared to basic engine flushes, the advanced formulation and superior results justify the investment for serious automotive enthusiasts.

Value Analysis:

  • Premium pricing justified by revolutionary technology
  • Professional-grade performance at consumer price point
  • Long-term engine protection benefits
  • UK manufacturing quality and innovation
  • Comprehensive cleaning and restoration capabilities

Final Verdict

4.7
Overall Rating

Revolutionary ester-based engine cleaning technology

Oilsyn ReleaseTech Power Flush represents a genuine breakthrough in engine cleaning technology, introducing the first ester-based engine flush available on the market. This revolutionary approach delivers professional-grade cleaning performance while maintaining complete safety for all engine components, including seals and emission control systems. The proprietary Group VI Ester and Friction Modifier technology provides superior deposit removal capabilities that exceed conventional petroleum-based cleaners, making it an exceptional choice for both preventive maintenance and restoration applications.

The product’s 30+ TBN cleaning power and bore glazing removal capabilities deliver measurable improvements in engine compression and oil consumption, while the non-corrosive formulation ensures complete safety for modern and classic engines alike. Customer feedback consistently confirms the product’s effectiveness, with users reporting impressive cleaning results and noticeable performance improvements. The UK manufacturing and Oilsyn’s commitment to innovation provide additional confidence in the product’s quality and reliability.

While ReleaseTech Power Flush commands a premium price compared to basic engine flushes, the revolutionary technology and superior performance justify the investment for serious automotive enthusiasts and professionals. The product is particularly recommended for high-value engines, restoration projects, or any application where maximum cleaning effectiveness and component safety are paramount. For those seeking the most advanced engine cleaning technology available, ReleaseTech Power Flush represents the cutting edge of automotive chemical engineering and delivers results that simply cannot be achieved with conventional products.

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